中国科学院数学与系统科学研究院期刊网
AMS
Liouville-Type Theorems for Conformal Gaussian Curvature Equations in R2
Yun Yan YANG
Acta Mathematica Sinica . 2003, (1): 63 -68 .  DOI: 10.1007/s10114-002-0227-1